“I would start a track and do vocals in one studio,” he explains. “In another studio, Slim Thug would do vocals with Brian and they would get sent into the studio where we were working. We had a hard drive that was constantly floating from room to room. [Interscope Records president] Jimmy Iovine would stop by and see all of this going on and say ‘You guys are crazy.’ He couldn’t believe what was going on there. But it was amazing productivity. And 14 hours of work zips by pretty fast when you’re moving like that.”